add banner archetype

lib/archetype.rb

@@ -9,22 +9,24 @@ class Archetype
   end
 
   def attributes
-    {'id' => @id,
-     'options' => @options}
+    {
+      id: @id,
+      options: @options
+    }
   end
 
   def self.default
     'regular'
   end
 
-  def self.poll
-    'poll'
-  end
-
   def self.private_message
     'private_message'
   end
 
+  def self.banner
+    'banner'
+  end
+
   def self.list
     return [] unless @archetypes.present?
     @archetypes.values
@@ -35,9 +37,9 @@ class Archetype
     @archetypes[name] = Archetype.new(name, options)
   end
 
-
-  # By default we have a regular archetype and a private message
+  # default archetypes
   register 'regular'
   register 'private_message'
+  register 'banner'
 
 end